Hongrun is a professional brick machine manufacturer and our main products include JKY60 two-stage vacuum brick extruder, JK series steel two-stage vacuum brick extruder, box-type feeder, high-speed crushing roller machine, biaxial mixer, belt conveyor, strip cutter, automatic brick slitter, etc. There are two kinds of kiln in brick making production line: tunnel kiln, Hoffman kiln.
Tunnel kiln is the most popular kiln to adopt in brick making production line. Tunnel kiln is usually a long linear form tunnel, its two-sides and coping has fixed wall and condole top, an orbit laid at the bottom, which the kiln car is operated. The combustion equipments are located on the middle of both sides of the tunnel kiln. The tunnel kiln usually has 4 sections to sintering bricks, such as preheating zone, sintering zone, heat preservation zone and national cooling zone.
Hoffmann kiln consists of a main fire passage surrounded on each side by several small rooms. Each room contains a pallet of bricks. In the main fire passage there is a fire wagon, that holds a fire that burns continuously. Each room is fired for a specific time, until the bricks are vitrified properly, and thereafter the fire wagon is rolled to the next room to be fired.
Hoffman kiln with tunnel dryer is also good for this production line. Cost less than tunnel kiln and more efficient than Hoffman kiln. No matter you are interested in any kiln, please do not hesistate to contact us , we will offer you more information.